The Power Palette: http://www.reapermini.com/PowerPalette/
The Power Palette is a fantastic aid for miniature painting! Upload an image, then click inside it; the Power Palette will give you the Master Series Paint color or colors it thinks are either close matches to the point you chose or colors you can mix together to get a great custom color!
Paint Range Compatibility Chart: https://www.dakkadakka.com/wiki/en/Paint_Range_Compatibility_Chart
Unable to find a paint that you used to use? Has something been discontinued? Want to find the equivalent paint in a different range? Here is the ultimate painting matrix, comparing the games workshop Citadel paints with every known equivalent. Please note, hex codes are all approximate – double check before you get a batch of paint made up to match that colour!
PaintRack (currently only for Android): https://play.google.com/store/apps/details?id=com.courageousoctopus.paintrack
Allows you to track your paints with over 5000 paints from top manufacturers! This is a great to keep track of what paint you used on which miniature. You can follow the 2 developers on their Twitter account here: https://twitter.com/courageousocto .
Attempt to make a Painting Scale
1- Literally dipped in paint, white circle eyes with black dot in center. Little to no effort put into paintjob. Sprue nubs covering model. F
2-Attempted to paint different parts of model different colors, but hamfisted the model. paint is thick, and color bleeds from section to section. D-
3- Detail is present, albeit sloppy, colors in correct places. Slightly thick paint. Little to no use of wash. D.
4- Just under table worthy. Basically a 5, but didn’t drill the barrel, mould lines present.
5 – Average middle of the road. “C”. Table top worthy. Nothing special. Black disk base
6 – Slightly above average, mini shows detail and/or heart put into it. “Meh” Basing.
7 – Good. This is a B rating, significant effort, good detail and shading. This model is pleasant to the eye. Based well
8 – This model is great. Not only is it painted beautifully, but creative use of greenstuff/ kitbashing/ 3rd party technical paints or the like puts it over a 7. Based beautifully
9 – “A” material, this model is gorgeous, and was painstakingly painted by tiny cherub hands. If sculpted or kitbashed, was done so by a distinguished hand.
10 – A+, flawless, perfect miniature. Only a turbo grognard with an optic sensor eye for detail and a steady machine assisted hand will ever achieve this level of perfection.