I use vodka or lemon extract blended with Americolor gels. I have also purchased Americolor airbrush colors and I like them. (you use them with a standard paint brush and vodka or extract) You don’t have to dilute them as much and the colors are much stronger, more intense. Also, when you dilute the gels you tend to get thick clumps of gel that don’t blend. I like this technique for getting fine details. Just give it a try!
Psalm 127:1 Unless the LORD builds the house, the builders labor in vain.