Expression for different colours in Bubble chart

[#1]

Hi All I am trying to write an expression for colours in a Bubble Chart.  The expression works for one colour but how do I add an else if to add the other colours.

if

(count ([Asset ID]=0),LightBlue())
elseif(count ([Serial #]

>=5),Lightred())

[#2]

Sorry expression is

if

(count ([Asset ID]=0),LightBlue())
elseif(count ([Asset ID]

>=5),Lightred())

[#3 · Accepted solution]

if (count ([Serial #])=0, white(), if (count ([Serial #])<=100, red(), if (count ([Serial #])>101, Blue())))

Sorted