Saddles are fine if you are tying one size of fly. Myself I prefer capes, they give you a much better option in sizing.
Say a 1/4 saddle costs $30.00 it will tye 14's. If you want to tye 12's well then it's another 30.00. So if you buy a Whitting Pro grade for $45.00 you get a better range of sizes.
For YS I use ginger or cream or grizzle, to color the hackle you can use a Pantone water proof maker. I color the hackle then set them aside so the hackle can dry. The body color is important