I have fiebings light blue and turquoise leather dye. I have tried to dilute with isopropyl alcohol and denatured alcohol. I need a very light blue. I can get color I want on white paper but when I try on scrap piece of leather it's always to dark. I have tried to put on extremely thin, unsuccessfully. Thanks for any advice anyone can give me. I have successfully got pink from red before but can't seem to get the blue.