appview/pages: allow custom colors for dolly silhouette

by passing a param, we can change "currentColor" to a specific color. we
make this adjustment to get around the svg failing to be parsed by
oksvg.

Signed-off-by: oppiliappan <[e-mail]>

appview/pages/templates/fragments/dolly/silhouette.html

···
      transform="translate(-0.42924038,-0.87777209)">
     <path
        class="dolly"
-       fill="currentColor"
+       fill="{{ or . "currentColor" }}"
        style="stroke-width:0.111183"
        d="m 16.775491,24.987061 c -0.78517,-0.0064 -1.384202,-0.234614 -2.033994,-0.631295 -0.931792,-0.490188 -1.643475,-1.31368 -2.152014,-2.221647 C 11.781409,23.136647 10.701392,23.744942 9.4922931,24.0886 8.9774725,24.238111 8.0757679,24.389777 6.5811304,23.84827 4.4270703,23.124679 2.8580086,20.883331 3.0363279,18.599583 3.0037061,17.652919 3.3488675,16.723769 3.8381157,15.925061 2.5329485,15.224503 1.4686756,14.048584 1.0611184,12.606459 0.81344502,11.816973 0.82385989,10.966486 0.91519098,10.154906 1.2422711,8.2387903 2.6795811,6.5725716 4.5299585,5.9732484 5.2685364,4.290122 6.8802592,3.0349975 8.706276,2.7794663 c 1.2124148,-0.1688264 2.46744,0.084987 3.52811,0.7011837 1.545426,-1.7139736 4.237779,-2.2205077 6.293579,-1.1676231 1.568222,0.7488935 2.689625,2.3113526 2.961888,4.0151464 1.492195,0.5977882 2.749007,1.8168898 3.242225,3.3644951 0.329805,0.9581836 0.340709,2.0135956 0.127128,2.9974286 -0.381606,1.535184 -1.465322,2.842146 -2.868035,3.556463 0.0034,0.273204 0.901506,2.243045 0.751284,3.729647 -0.03281,1.858525 -1.211631,3.619894 -2.846433,4.475452 -0.953967,0.556812 -2.084452,0.546309 -3.120531,0.535398 z m -4.470079,-5.349839 c 1.322246,-0.147248 2.189053,-1.300106 2.862307,-2.338363 0.318287,-0.472954 0.561404,-1.002348 0.803,-1.505815 0.313265,0.287151 0.578698,0.828085 1.074141,0.956909 0.521892,0.162542 1.133743,0.03052 1.45325,-0.443554 0.611414,-1.140449 0.31004,-2.516537 -0.04602,-3.698347 C 18.232844,11.92927 17.945151,11.232927 17.397785,10.751793 17.514522,9.9283111 17.026575,9.0919791 16.332883,8.6609491 15.741721,9.1323278 14.842258,9.1294949 14.271975,8.6252369 13.178927,9.7400102 12.177239,9.7029996 11.209704,8.8195135 10.992255,8.6209543 10.577326,10.031484 9.1211947,9.2324497 8.2846288,9.9333947 7.6359672,10.607693 7.0611981,11.578553 6.5026891,12.62523 5.9177873,13.554793 5.867393,14.69141 c -0.024234,0.66432 0.4948601,1.360337 1.1982269,1.306329 0.702996,0.06277 1.1815208,-0.629091 1.7138087,-0.916491 0.079382,0.927141 0.1688108,1.923227 0.4821259,2.828358 0.3596254,1.171275 1.6262605,1.915695 2.8251855,1.745211 0.08481,-0.0066 0.218672,-0.01769 0.218672,-0.0176 z"
        id="path7"