Fill a rectangle with flood-color and flood-opacity selected.
parameters:
Example of code:
<defs>
<filter id="MyFilter" filterUnits="userSpaceOnUse" x="0" y="0" width="400" height="400">
<feImage xlink:href='fondu1.jpg' result='pict1'/>
<feFlood flood-color="red" flood-opacity='0.3' result='pict2'/>
<feComposite in='pict1' in2='pict2' operator="arithmetic" k1="0" k2="0.7" k3="0.7" k4="0"/>
</filter>
</defs>
<use filter="url(#MyFilter)" x='0' y='0'/>
Figure 1: JPEG picture composed with yellow and red feFlood
Tool: change parameters to compose picture with rectangle colored
FrontPage feColorMatrix feComponentTransfer feSpecularLightning feDiffuseLightning feSpotLight feDistantLight fePointLight feFlood feImage feTurbulence feTile feMerge feBlend feComposite feGaussianBlur feMorphology feConvolveMatrix feDisplacementMap feOffset