agreed on camo schemes on mechs.
I tried doing a semi digital on my Sandrock Custom and it worked to a point. I kept the pattern VERY broad, more like stripes made up of dots. take photos and if you can superimpose the pattern in photoshop play around with it before commmitting it to too much paint. You may find you do not like it as well, or want to change colors.
Also, i found that when taking pics of digital paint...with a digital camera....you get some rather intersting effects. Same goes for models on display on digital cloth....my helos tended to blend in!!!