your concern is regarding the bright yellow or orange snot during cold. since you are recovering from a cold the yellow thick mucus is due to your body fighting off the infection. it is bright yellow at first which changes to dark yellow a few days later. orange colored or red colored phlegm can be due to presence of blood in the mucus which may be due to frequent nose blowing or slight bleeding of the blood vessels during cold. however if the red color persists for many days or there is any frank bleeding then it needs evaluation. persistence of yellow color should rule out presence of sinus infection or sinusitis. steam inhalation is quite useful in both the cases. it is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. for exact diagnosis you are requested to consult your doctor. i sincerely hope that helps. take care.
hi there i have extremely bright yellowy orangey mucus and have been recovering from a flu / cold any ideas what it could be