purple is fine, it looks like overwatering from the pictures
llamaman666 Reviewed by llamaman666 on . First time growin,somehelp My plants (sweet dreams) are now 24 days into there flower cycle...The lower small leaves and the large top fan leaves are turning yellow....I wuld say there is more yellow leaves now than green...I checked my soil and got the following results.... Nitrate.......was LOW Phosphorus.....was high to medium Potassium.....was medium to low Ive been useing the following nutrients.... Dr.Hornby advanced nutrients (big bud) 0-1-4 Advanced nutrients organic super tea .50-1.50-2.0 Rating: 5