Ну если только попробовать на карамели сделать... только... и селитра и сахар растворятся и нормальной формы добиться будет сложно... да и вообще идея помойму провальная...... хотя... можно и попробовать)))

А вот можно посмотреть в действии пример такой, случайно получившейся, дымовой звезды: Flash-ка! Реактивная галерея.

Идея неплохая, вот я немного подумал, можно сделать так, чтобы, например, снаряд разбросил звёздки эти дымовые, но на звёздки сделать замедлитель, чтобы дымились они не сразу... Т.е. через определённое время звёзды задыматься цаетными дымами на расстоянии, в дневное время будет весьмя красиво, только вот дымить они должны быстро, как бы с густым облачком цветного дыма... Потом он рассеится конечно... Замедлитель нужне буквально несколько десятков долесекунд, нужно подсчитать правильный момент.
Как дополнение к "дымовому снаряду", нужно сделать "дымящий хвост", так как искры и прочее дн1м почти не видны... Только хвост должен остановиться через некоторое время, однако хвост будет мешать видеть дымот звёздок... Тогда снаряд нужно пускать под углом и желательно на большую высоту и снаряд должен быть большой, сначала будет дымовой хвост по диагонали, если смотреть на шоу сбоку, потом он прекратится, снаряд проелтит остальную половину пути уже без дыма, затем он разорвётся, а значит будет звуковое ощущение, которое днём также "существует", затем разлетевшиеся звёздки задымяться небольшими облочками густого цветного дыма.... 

Люди, это чтоли и есть дымовые звёзды??:

Chapter 11: smoke stars

Red smoke star
Source: Shimizu[1], page 226. Listed as "Smoke dye compositions for stars, red"
Comments:
Preparation: Wheat flour can be substituted for milk sugar. Produce as 10mm cut stars, and prime with meal powder.

Potassium chlorate................................28
Milk sugar........................................20
Rhodamine B conc..................................30
Oil orange........................................22
Soluble glutinous rice starch.....................+3%

Yellow smoke star #1
Source: Composition from Shimizu[1], page 229. Listed as "Yellow dragon"
Comments: The smoke is more dense than that of dye smoke, but it looks dark yellow against the light of the sun. The smoke is poisonous.
Preparation: Make pressed stars.

Potassium nitrate.................................25
Sulfur............................................16
Realgar...........................................59

Yellow smoke star #2
Source: Composition from Shimizu[1], page 228. Listed as "White willow"
Comments:
Preparation:

Potassium nitrate.................................48.5
Sulfur............................................48.5
Realgar...........................................3
Charcoal (or hemp coal)...........................+2%
Soluble glutinous rice starch.....................+6%

Yellow smoke star #3
Source: Composition from Shimizu[1], page 229. Listed as "Yellow willow"
Comments:
Preparation: Form into cut stars, and dry them well. Place them in a coating tub. Add a slurry of soluble glutinous rice starch and cover all the surfaces with the paste by shaking the tub. Remove from the tub and place them on gypsum powder. Roll them in it until all the stars are coated with the gypsum. Dry in the sun. Repeat these operations untill the layer of gypsum becomes thicker than 1.5mm. It will be necessary to repeat at least 6 times. When done, bore a hole in each star to introduce the fire in it (with appropiate precautions taken). Prime the hole with black powder paste and dry in the sun. Roll a final layer of soluble glutinous rice starch and meal powder over the stars and dry them thoroughly.

Potassium nitrate.................................43
Sulfur............................................10
Realgar...........................................37
Hemp coal (or Paulownia coal).....................4
Soluble glutinous rice starch.....................6

Green smoke star
Source: Composition from Shimizu[1], page 226. Listed as "Smoke dye compositions for stars, green"
Comments:
Preparation: Wheat flour can be substituted for milk sugar. Produce as 10mm cut stars, and prime with meal powder.

Potassium chlorate................................33
Milk sugar........................................27
Oil yellow (Butter yellow)........................20
Phthalocyanine blue...............................20
Soluble glutinous rice starch.....................+3%

Blue smoke star
Source: Composition from Shimizu[1], page 226. Listed as "Smoke dye compositions for stars, blue"
Comments:
Preparation: Wheat flour can be substituted for milk sugar. Produce as 10mm cut stars, and prime with meal powder.

Potassium chlorate................................33
Milk sugar........................................27
Phthalocyanine blue...............................40
Soluble glutinous rice starch.....................+3%

Violet smoke star
Source: Composition from Shimizu[1], page 226. Listed as "Smoke dye compositions for stars, Violet"
Comments:
Preparation: Wheat flour can be substituted for milk sugar. Produce as 10mm cut stars, and prime with meal powder.

Potassium chlorate................................29
Milk sugar........................................25
Rhodamine B conc..................................13
Oil orange........................................16
Phthalocyanine blue...............................17
Soluble glutinous rice starch.....................+3%

White smoke star #1
Source: Composition from Shimizu[1], page 228. Listed as "White chrysanthemum I"
Comments:
Preparation:

Potassium nitrate.................................53
Sulfur............................................7
Charcoal (or hemp coal)...........................32
Lampblack.........................................8
Soluble glutinous rice starch.....................+6%

White smoke star #2
Source: Composition from Shimizu[1], page 228. Listed as "White chrysanthemum II"
Comments:
Preparation:

Potassium nitrate.................................66
Realgar...........................................13
Charcoal (or hemp coal)...........................5
Lampblack.........................................5
Soluble glutinous rice starch.....................11

White smoke star #3
Source: Composition from Shimizu[1], page 228. Listed as "White willow"
Comments: The smoke is caused by condensation of sulfur vapour.
Preparation: Form into cut stars, and dry them well. Place them in a coating tub. Add a slurry of soluble glutinous rice starch and cover all the surfaces with the paste by shaking the tub. Remove from tge tub and place them on gypsum powder. Roll them in it until all the stars are coated with the gypsym. Dry in the sun. Repeat these operations until the layer of gypsum becomes thicker than 1.5mm. It will be necessary to repeat 6 times. When done, bore a hole in each star to introduce the fire in it (with appropiate precautions taken). Prime the hole with black powder paste and dry in the sun. Roll a final layer of soluble glutinous rice starch and meal powder over the stars and dry them thoroughly.

Potassium nitrate.................................48.5
Sulfur............................................48.5
Realgar...........................................3
Charcoal (or hemp coal)...........................+2%
Soluble glutinous rice starch.....................+6%

а как их замешивать?