i use my silks for hand applique, piecing, embroidery and quilting. silk thread is wonderful to work with...a couple tips though:
first- use the recommended 18-24" of thread at a time...longer and it will start fraying/tangling before you use it up. second...use a fine needle i use #12 sharps. use your threads for what ever you want to use them for, the colors work for...no reason to 'sweat the small stuff'
i do 'save' my silks for special projects due to the cost but if i can find the right color always for hand applique...it is a very fine, strong thread