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i have an app called sketchbook pro on android..when i try to blend colors it adds up to dark murky black brown..Which is opposite to white.

I want to know why i am getting black, and what can i do.

Side Stuff: Also, opacity doesn't work. Opacity works as flow..instead of opacity. And opacity affects each repeating circle instead of whole line in brush setting.

Is there a better app for painting and drawing.

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    Are you sure it's using RGB and not CMYK? CMYK is a subtractive color model and will turn to black.
    – Hanna
    Aug 6 '14 at 2:02
  • there are options to select color...but i think it only switches color palate and not actual model..i have been thinking that too.
    – user8795
    Aug 6 '14 at 21:18
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Sketchbook simulates painting on a canvas, the same way all painting applications do. You are not painting with light therefore the more you paint, the darker things get -- just like on a real life canvas. It is only light which is used to show you what you are painting.

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  • now come to think of it this is true...so is there an app you know that uses rgb model. Or you think it's a bad idea.
    – user8795
    Aug 6 '14 at 21:25
  • Well, you'd have to look for apps that were like "Litebright" apps. You'd be painting in reverse basically.
    – Scott
    Aug 6 '14 at 21:37
  • i found out if i use lighten brush mode it works as if i am using additive model.
    – user8795
    Aug 6 '14 at 22:03
  • Any of the "Dodge" modes in Photoshop will also result in more of a "reverse painting" effect.
    – Scott
    Aug 6 '14 at 22:08

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