feat: add black spinner

src/components/CommonKit/Spinner/StyledBlackSpinner.tsx

+import React from 'react'
+import { withStyles } from '@material-ui/core/styles'
+import MuiCircularProgress, {
+  CircularProgressProps,
+} from '@material-ui/core/CircularProgress'
+
+const SpinnerBase = withStyles({
+  root: {
+    color: 'var(--black)',
+  },
+})(MuiCircularProgress)
+
+type StyledSpinnerProps = CircularProgressProps
+
+const StyledSpinner: React.ComponentType<StyledSpinnerProps> = ({
+  ...props
+}: StyledSpinnerProps) => {
+  return <SpinnerBase {...props} />
+}
+
+export default StyledSpinner

src/components/ContentComponents/Konnector/KonnectorResult.tsx

@@ -2,7 +2,7 @@ import React from 'react'
 import { translate } from 'cozy-ui/react/I18n'
 
 import StyledButton from 'components/CommonKit/Button/StyledButton'
-import Spinner from 'components/CommonKit/Spinner/Spinner'
+import StyledBlackSpinner from 'components/CommonKit/Spinner/StyledBlackSpinner '
 
 interface KonnectorResultProps {
   date: string
@@ -38,7 +38,7 @@ const KonnectorResult: React.FC<KonnectorResultProps> = ({
       <div className="inline-buttons">
         <StyledButton type="button" color="primary" onClick={updateKonnector}>
           {updating ? (
-            <Spinner size="2em" />
+            <StyledBlackSpinner size="2em" />
           ) : (
             <div>{t('KONNECTORCONFIG.BTN_UPDATE')}</div>
           )}