Maybe "Leon's eyes dropped, a flush rose slowly on his brown cheeks "maybe it was very foolish.
Leon's brown cheeks flushed.
Leon's green cheeks flushed.
There are people typing.
There is dirt on the ground.
Two people are out in public.
The young child is touching the flip-flops.
He knew that he was not going crazy.
The radioactive fuel in the spacecraft is very secure and there is no risk of environmental damage should the spacecraft blow up.