Unemibala emingaki uthingo?
Ngokuvamile uthingo luqukethe imibala engu-7 - obomvu, ophuzi, ophuzi, oluhlaza, oluhlaza okwesibhakabhaka, i-indigo ne-violet, engakhunjulwa ngokusebenzisa izifinyezo ezinjenge- "ROY G BIV" noma imisho elula efana ne- "Richard Of York Gave Battle In Vain", lapho uhlamvu lokuqala lwegama ngalinye luhambisana nohlamvu lokuqala lwemibala yothingo, ngokulandelana.