Start with hierarchy, not habit
A line colour schedule should tell a user which game is active before they reach the first junction. Begin with the primary sport, then assign the strongest available contrast to that layout. Secondary sports can use less dominant colours, but they still need to remain legible under the real hall lighting. A familiar colour convention can help regular users, yet it should never replace a physical sample check on the actual floor.
Judge the floor and the light together
Maple, pale polyurethane, dark resin and coloured outdoor acrylic all change how a line reads. A colour that looks distinct on a screen may flatten under warm LED fittings or glare from windows. Place sample cards flat on the floor, view them from playing height and repeat the check from the spectator or coaching position.
Reduce avoidable crossings
Where several layouts share a hall, colour is only one control. Avoid placing two similar colours through the same high-density area where possible. Record deliberate interruptions, broken extensions and shared centre lines in the drawing notes so the installer is not left to improvise.
Issue a line schedule
The final schedule should list sport, colour reference, nominal width, solid or broken treatment, and any junction rule. Keep a retained paint sample or manufacturer colour card with the maintenance file. Governing-body and competition requirements must be checked before installation; this guide is a planning aid, not an approval document.