Paint data: Do not output class if only a single class is present
Paint data: Do not output class if only a single class is present

marinkaz/orange3,marinkaz/orange3,qPCR4vir/orange3,cheral/orange3,marinkaz/orange3,qPCR4vir/orange3,qPCR4vir/orange3,cheral/orange3,cheral/orange3,kwikadi/orange3,marinkaz/orange3,kwikadi/orange3,qPCR4vir/orange3,kwikadi/orange3,qPCR4vir/orange3,cheral/orange3,kwikadi/orange3,cheral/orange3,qPCR4vir/orange3,kwikadi/orange3,kwikadi/orange3,marinkaz/orange3,cheral/orange3,marinkaz/orange3