You might want to check out this
http://www.mvps.org/access/api/api0060.htm

Now you can select a color.  I doubt your concept will work with a
datasheet or continuous form but will work fine with a single form
record.  You can create a text box or label and set the background to
whatever color you have selected.

If the numerical dataset is unbound, you can display many color text
boxes in the form.

If the numerical dataset is bound, you can display many color text boxes
in the form if each number is a field.

If you are datasheeting/continuous forms displaying the data you may
have a real hard time being able to show each record with different colors.

Hmmmm....maybe by presenting the data in a report you can show the
colors...once they have been assigned to a number.  In the OnFormat in
the Detail band you might be able to change the background for each
color.  Haven't tested it out.

For assigning, you may want to create a lookup table to assign the color
values if you have a static number of colors.