| geom_glowline | Connect Observations | 
| geom_glowpath | Connect Observations | 
| geom_glowpoint | Points | 
| geom_glowstep | Connect Observations | 
| geom_shadowline | Connect Observations | 
| geom_shadowpath | Connect Observations | 
| geom_shadowpoint | Points | 
| geom_shadowstep | Connect Observations | 
| scale_brewer | Sequential, diverging and qualitative colour scales from colorbrewer.org | 
| scale_colour_hue | Evenly spaced colours for discrete data | 
| scale_colour_steps | Binned gradient colour scales | 
| scale_continuous | Continuous and binned colour scales | 
| scale_gradient | Gradient colour scales | 
| scale_grey | Sequential grey colour scales | 
| scale_shadowcolour_binned | Continuous and binned colour scales | 
| scale_shadowcolour_brewer | Sequential, diverging and qualitative colour scales from colorbrewer.org | 
| scale_shadowcolour_continuous | Continuous and binned colour scales | 
| scale_shadowcolour_date | Gradient colour scales | 
| scale_shadowcolour_datetime | Gradient colour scales | 
| scale_shadowcolour_discrete | Evenly spaced colours for discrete data | 
| scale_shadowcolour_distiller | Sequential, diverging and qualitative colour scales from colorbrewer.org | 
| scale_shadowcolour_gradient | Gradient colour scales | 
| scale_shadowcolour_gradient2 | Gradient colour scales | 
| scale_shadowcolour_gradientn | Gradient colour scales | 
| scale_shadowcolour_grey | Sequential grey colour scales | 
| scale_shadowcolour_hue | Evenly spaced colours for discrete data | 
| scale_shadowcolour_identity | Use values without scaling | 
| scale_shadowcolour_manual | Create your own discrete scale | 
| scale_shadowcolour_ordinal | Viridis colour scales from viridisLite | 
| scale_shadowcolour_steps | Binned gradient colour scales | 
| scale_shadowcolour_steps2 | Binned gradient colour scales | 
| scale_shadowcolour_stepsn | Binned gradient colour scales | 
| scale_shadowcolour_viridis_b | Viridis colour scales from viridisLite | 
| scale_shadowcolour_viridis_c | Viridis colour scales from viridisLite | 
| scale_shadowcolour_viridis_d | Viridis colour scales from viridisLite | 
| scale_viridis | Viridis colour scales from viridisLite |