I have green veins on my chest, arms, and legs. Any suggestions?

All the veins that you describe are treatable.  Chest veins are treated by sclerotherapy, arms and hands can be treated by sclerotherapy, microphlebectomies or laser, and leg veins may require a venous evaluation with ultrasound prior to treatment.  See a vein specialist.

The ones on the chest are reticular veins or small varicose veins. Same on the legs.Best treatment would be sclerotherapy with foam polidochanol. I would see a vein specialist certified by the American Board of Venous and Lymphatic Medicine. Look at the links on my site where there are videos showing how these areas are treated.