Looks burnt or discolored

The tips look burnt discoloured on the top of a few buds I'm in week 4 of flower I have my led lights about 18-20 away from canopy , this could be normal I'm a new grower just looking for some input if I should be worried

That’s pretty normal at around 30 days my dude I just got a couple orange ones on day 30 ... be careful with heat and dry temps if it persist. .. a lil bit on the top buds is normal