Template:කාලගුණකොටුව/cols can be used to produce a background color in a table cell, based off a given number. Insert {{කාලගුණකොටුව/cols|0}}, with a number from the hours in a 30-day month table above as the first parameter, into a style statement.

Example
{| class="wikitable"
|-
| style="{{කාලගුණකොටුව/cols|37}}"|450
| style="{{කාලගුණකොටුව/cols|279}}"|3,400
| style="{{කාලගුණකොටුව/cols|522}}"|6,350
|}

Will produce

450 3,400 6,350