Fix admin chart scaling and colors.
Fix admin chart scaling and colors.

Poniverse/PVLive,AzuraCast/AzuraCast,Poniverse/PVLive,Poniverse/Ponyville-Live,Poniverse/Ponyville-Live,SlvrEagle23/AzuraCast,Poniverse/Ponyville-Live,AzuraCast/AzuraCast,SlvrEagle23/AzuraCast,Poniverse/PVLive,SlvrEagle23/AzuraCast,AzuraCast/AzuraCast,Poniverse/PVLive,SlvrEagle23/AzuraCast,SlvrEagle23/AzuraCast,Poniverse/Ponyville-Live,Poniverse/PVLive,Poniverse/Ponyville-Live,AzuraCast/AzuraCast