Cleanup color map for 'Light grey-blue river cell' and 'brown waste cells' needs to be switched.

[ldfrancis]

In the custom color dictionary for cleanup, the rgb color list for 'Light grey-blue river cell' and 'Light grey-blue stream cell' should be [99, 156, 194] while that of 'brown waste cells' should be [113, 75, 24].

With the current values, rivers appear brown and wastes appear light-grey when the env is rendered.

sequential_social_dilemma_games/social_dilemmas/envs/cleanup.py

Lines 13 to 16 in bbac0fa

	CLEANUP_COLORS = {'C': [100, 255, 255], # Cyan cleaning beam
	'S': [113, 75, 24], # Light grey-blue stream cell
	'H': [99, 156, 194], # brown waste cells
	'R': [113, 75, 24]} # Light grey-blue river cell