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I mix red and blue to get purple, but get grey!!!! - Page 2

post #16 of 21
Thread Starter 
SUCCESS - I HAVE PURPLE FONDANT!

To the person who suggested mixing pink and blue - thank you! I got a bottle of pink liquid colouring and mixed a little of that and a little liquid blue, and it worked and I can now get the various shades I want. I know you're not meant to use liquid colouring with fondant, but I have found it works fine as long as your not using too much liquid (kneading a little icing sugar in thoroughly can correct any stickiness in my experience). Nonetheless, I also bought red and blue gel colours at the same time, and they definitely get a more intense colour - not needed in this project, but with a little boy who's favourite colour is red, I can see a use further down the line... icon_smile.gif

Again, thanks for all the replies!
post #17 of 21
I have been dabbling in decorating cakes and I also work at Home Depot in the paint dept. I can also add that from what I have learned, mixing paint ( for 10 yrs). Colorants behaviors very greatly depending upon the formulation of different paints. The same formulation in Behr brand paint will not result in the same color in Glidden. I can tell you that in order to get darker reds and true purples the colorant added is magenta. The closest in say Wilton is the rose color.1 more thing to add in paints we have different bases which help..1. White base is pure white with lots of Titanium dioxide, ( for light colors).2 pastel base with about 25% less white for pastels.3 Accent base almost no white, for darker colors. 4. Deep base, with no white in it, it is basically clear, for pure colors and blacks. In fondants, frostings ,icings we are fighting to hide whites and some of those are a bit grey and ivoryish themselves.

The best thing that has helped me learn a lot is scouring the internet and learning how we perceive colors..
Also make sure your lighting is accurate color rendering bulbs.

I could go on and on... But instead if anyone has questions just ask..
post #18 of 21

Usually if that happens you used too much of one color. Usually you need more red food coloring then blue to make purple. You might have used the same amount for both.

post #19 of 21
Quote:
Originally Posted by bgbdbill67 View Post

I have been dabbling in decorating cakes and I also work at Home Depot in the paint dept. I can also add that from what I have learned, mixing paint ( for 10 yrs). Colorants behaviors very greatly depending upon the formulation of different paints. The same formulation in Behr brand paint will not result in the same color in Glidden. I can tell you that in order to get darker reds and true purples the colorant added is magenta. The closest in say Wilton is the rose color.1 more thing to add in paints we have different bases which help..1. White base is pure white with lots of Titanium dioxide, ( for light colors).2 pastel base with about 25% less white for pastels.3 Accent base almost no white, for darker colors. 4. Deep base, with no white in it, it is basically clear, for pure colors and blacks. In fondants, frostings ,icings we are fighting to hide whites and some of those are a bit grey and ivoryish themselves.

The best thing that has helped me learn a lot is scouring the internet and learning how we perceive colors..
Also make sure your lighting is accurate color rendering bulbs.

I could go on and on... But instead if anyone has questions just ask..
I have always wished that Home Depot would team up with Americolor to make a food color matching system.  I recently blogged about finding how to make the perfect shade of tan that a lot of my brides have been dying for lately - it's golden yellow and purple!
post #20 of 21
Quote:
Originally Posted by cupadeecakes View Post
I have always wished that Home Depot would team up with Americolor to make a food color matching system. I recently blogged about finding how to make the perfect shade of tan that a lot of my brides have been dying for lately - it's golden yellow and purple!

 

This is a heavy read, but I found it interesting. It was published 8 years ago and I stumbled across it while I was trying to color-match fondant a few weeks ago. I had the same thought as you, so I wanted to see if someone tried it yet.

 

http://web.ing.puc.cl/~dmery/Prints/ISI-Journals/2006-FoodResInt-ColorMeasurementLab.pdf

 

tl;dr: The researchers tried to duplicate a color of food (a potato chip) by converting a digital image in RGB to the kind of color readings they use for paint color matching - L*a*b*. Early work was promising, but not all the way there.

~ Follow me to the underground ~

http://www.undergroundcakes.com

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~ Follow me to the underground ~

http://www.undergroundcakes.com

Reply
post #21 of 21

That looks awesome!  I'm always up for a heavy read when it comes to cake! Thanks for sharing.

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