Open up the shader in notepad. Most of the shaders tell you what they are used for exp:bumpbone.fx CHARACTER SHADER FOR SKINNED MESHES - Diffuse + Normal + Specular + GI + Animated Glow
That would tell me its good for a NPC.. On a side note you can edit them there too find a line that reads
/*******SURFACE**************************/
float Bumpiness
<
string UIWidget = "slider";
float UIMin = -5.0;
float UIMax = 5.0;
float UIStep = 0.1;
string UIName = "bumpiness";
> = 1.000000;
float Glossiness : Power
<
string UIWidget = "slider";
float UIMin = 1.0;
float UIMax = 128.0;
float UIStep = 1.0;
string UIName = "specular power";
> = 32.000000;
float Alphavalue : AlphaOverride
<
string UIName = "Alpha Override";
> = 1.0f;
edit the line that loos like this > = 1.000000; change it to > = 2.000000; then save it as bumpbonetest.fx and see what it does the next time you test run..